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    SubjectRe: [RFC] [PATCH] cfq-iosched: add cfq group hierarchical scheduling support
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    On Sun, Aug 29, 2010 at 11:50 PM, Gui Jianfeng
    <guijianfeng@cn.fujitsu.com> wrote:
    >  o Each cfq group has its own group service tree.
    >  o Each cfq group contains a "group schedule entity" (gse) that
    >    schedules on parent cfq group's service tree.
    >  o Each cfq group contains a "queue schedule entity"(qse), it
    >    represents all cfqqs located on this cfq group. It schedules
    >    on this group's service tree. For the time being, root group
    >    qse's weight is 1000, and subgroup qse's weight is 500.
    >  o All gses and qse which belones to a same cfq group schedules
    >    on the same group service tree.

    Overall, I like this approach. It's similar to what we are using with
    earlier hierarchical patches. Can you improve the naming a little
    bit? "qse" and "gse" look almost identical and breaks my brain.
    Maybe "queue_entity" and "group_entity"? If entity is to much to
    type, then "item"?

    Chad
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